Features: 1. 3 Intensity Levels Optional: The finger exerciser provides you with Grey (Low Intensity), Blue (Medium Intensity), Black (High Intensity). You can choose the appropriate level according to your grip strength. 2. Silicone Material: Hand grip strengthener is made of silicon with great elasticity, safe, environmentally friendly, skin friendly. 3. Portable And Lightweight: The finger trainer is small and light enough to fit in gym bag or pocket, you can exercise your hands anytime, anywhere with it. 4. Multipurpose: The strength training device is ideal for rock climbing, ball sports enthusiasts, and musicians to increase the strength and flexibility of the fingers. It is also suitable for people who regularly use computers and mobile phones to relieve hand fatigue and discomfort and prevent joint pain and muscle aches. 5. Ideal For Sports Lovers: The Finger Strengthener can improve the finger strength of athletes (rock climbing, fitness, tennis, baseball, boxing) and musicians (guitar, bass, pianist, and violinist) and daily housework (driving, typing, writing, working, etc.). Specification: Material: Silicone Product Color: Grey (Low Intensity), Blue (Medium Intensity), Black (High Intensity) Product Size: Length: 9cm, Wrist Loop Diameter: 5.5cm, Finger Loop Diameter: 2cm Product Weight: 24g Package Included: 1 x Finger Trainer